Campagnolo Shamal Ultra C17&nbsp;wheels, Black, One Size Includes Campagnolo wheel bags Spoke Anti-Rotation System allows spokes to maintain the best aerodynamic position Proprietary MoMag system allows the external profile of the rim to be free of holes making the rim stronger and stiffer while eliminating the need for rim tape Campagnolo G3 spoke pattern has twice as many spokes on the rear drive side wheel resulting in greater lateral rigidity and power transfer while reducing stress on the spokes and wheel vibra USB ceramic bearings increase smoothness and decrease rolling resistance, weight and the need for maintenance. USB bearings are 50% smoother than standard Campagnolo bearings